“I could have done something, surely. Why didn’t I see Emma Stone’s name on the top of the card?” Dunaway said, adding that she feels “very guilty” about the mix-up.

Dunaway, who incorrectly announced “La La Land” as the Best Picture winner over “Moonlight” alongside co-presenter Warren Beatty, also walked through what was going through her head on stage.

“[Beatty] took the card out, and he didn’t say anything,” she said. “He paused. He looked over me, offstage. He looked around. And I finally said, ‘You’re impossible.’ I thought he was joking. I mean, I thought he was stalling. Warren’s like that. He kind of holds the power and makes people … a dramatic pause.”

At the ceremony last February, Dunaway and Beatty were handed the wrong card as they were entering the stage to present the final award of the night. Beatty was given a duplicate card naming “La La Land” star Emma Stone the Best Actress winner, which Dunaway mistakenly interpreted to mean the film had won Best Picture.

The mix-up forced producers to step in and announce Barry Jenkins’ “Moonlight” as the rightful winner after the cast and producers of “La La Land” were already on stage to accept an award they hadn’t won.

“We were — I won’t say deers in the headlight — but you are completely stunned. You don’t know what has happened,” Dunaway said.

Oscars: Stars' Reactions to 'Moonlight' Best Picture Win Are The Best (Photos)

No one was prepared tonight for what may have been the biggest on-stage mistake in the history of the Oscars, when "Moonlight" took home the award for Best Picture -- only after it was first mistakenly given to "La La Land." Here are the best reactions from the stars at the Oscars.

Viola DavisHolding her own Oscar in hand, Davis is clearly thrilled for everyone involved with "Moonlight" -- as is her husband, Julius Tennon.

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Meryl StreepMore than anyone, Streep was absolutely floored by the Oscar stage Best Picture flub.

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Charlize TheronFuriosa approves.

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Taraji P. HensonHenson was filming the moment on her phone, but couldn't wipe the shocked look off her face as "Moonlight" won.

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Nicole KidmanBoth Kidman and Keith Urban were ecstatic to hear the "Moonlight" news.

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Denzel WashingtonWashington's face conveyed nothing but pride as the "Moonlight" cast and crew took the Oscar stage.

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Busy PhilippsIt's possible Philipps could be more thrilled at "Moonlight" taking Best Picture, but it sure doesn't look like it.

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Janelle MonaeFrom the Oscar stage, Monae celebrated the "Moonlight" win, putting into action the feelings of a huge number of people across the Internet.

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Matt DamonDamon broke out the two-finger dad whistle to share his approval of the "Moonlight" win.

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Octavia SpencerSpencer beamed over the "Moonlight" win, adding her applause.

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Dwayne "The Rock" JohnsonThe Rock is all smiles as the Best Picture announcement goes out.

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Samuel L. JacksonThe angle was a bit obscured, but Jackson took a photo with his phone of the amazing Best Picture moment, and then appeared to wipe away a tear.

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Shock, disbelief, tears and laughter as Barry Jenkins’ drama lands Best Picture Oscar after it was mistakenly given to “La La Land”

No one was prepared tonight for what may have been the biggest on-stage mistake in the history of the Oscars, when "Moonlight" took home the award for Best Picture -- only after it was first mistakenly given to "La La Land." Here are the best reactions from the stars at the Oscars.